On 06/21/07 16:01, Alex Samad wrote:
should something like this work
default proto static metric 5
nexthop via 58.173.108.1 dev vlan2 weight 10
nexthop via 10.20.20.106 dev ppp0 weight 20
and then let the dgd detect dead gateways and drop the relevant route
about.
Doesn't this use "Equal Cost Multi Path" (ECMP) routing?
If so, how does this take in to account that I do not want any of the
traffic to run over the backup connection unless the primary is down?
It is my understanding that the weights of an ECMP route are for a
fraction of the traffic. I.e. 10/30 and 20/30 of the traffic will use
each of the routes.
(Note: I state 10/30 and 20/30 because the man page indicates that
10/30 does not equal 1/3. Namely because the kernel creates an in
memory route for each weight for each route. Thus if you use a weight
of 10, there will be 10 routes in memory.)
Grant. . . .
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